<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript" src="js/jquery-3.0.0.js" ></script>
		<style>
			div{background: brown;border: solid 4px red;float: left;}
		</style>
	</head>
	<body>
		<div>蚊子蚊子蚊子</div>
        <script>
        	$("div").width("500px")
        	document.title=$("div").height()
        </script>  
	</body>
</html>
